Portable oil stove



Dec. 26, 1922.

A. MIC'LAUSH.

PORTABLE olL sTovE.

FILED NOV. l2r 1921. 4 SHEETS-SHED l.

@www

4 SHEETS-SHEET 2.

A. NHCLAUSH.

PORTABLE OIL STOVE. man Nov. 12, 1921.

Dec. 26, 1922.

Dea 26s 1922 LMQL AE MICLAUSH.

FGRTABLE OIL STOVE.

FILED Nov.12. 1921. 4 sHEETss'HEET a.

SUQ, v

Dec. 26, 1922.

'A. MxcLAUsH.

PORTABLE OIL STOVE.

4 SHEETS-SHEET 41 FILED NOV-12,1921.

ALEXANDER llIGLASH, @E CLEVELAND, OHO.

'EORTABLE OIL STOVE.

Application lfiled November 12, 1921.

To (55E rr/wm. if may Concern C it known that l, rnnxivmcn lvlreinen-u1, a citizen ofthe United vStates, residing at Cleveland. in the county of Cuyahoga and t-tate of Ohio, rave invented certain new and ilseful linproreinents in Portable Oil Stoves; and l' do hereby declare the following to be a full. clear, and exact description of the inntion, such as will enable others skilled in the z to which it appertains to make and use the same.

The present invention relates to in'iproements in oil stoves and aims to provide a .novel and li .o ly eliicient burner structure for the stove in which the fuel will be preheated initially and Vsubsequently mixed with a volume of and wherein the burner ves a nain burner portion .ry or supplemental burner for pre-heati il e fuel and aiding in the preparation or the fuel supply and co-mingled air to the main burner portion.

Another object of the invention resides in providing a compact, simple and inexpenanu on anni `sive forni of burner applicable to a great variety of stoves in which an active and thorough combustion of the fuel will be insured at all times and which will have a high heating capacity.

lVith the foregoing and other objects in view, the invention will be more fully de-v scribed hereinafter, and will be more particularly pointed out in the claims appended hereto.

'In the drawings, wherein like symbols refer to lileor corresponding parts throughout the several views,

Fig., 1 is a vertical sectional view through y an improved stove constructed'according to the present invention;

Fig. 2 is a plan view with the parts .in open position;

Fig. 3 is a fragmentary view in vertical section taken at right angles to Fig. l;

Fig. is a horizontal sectional View through the burner structure -with partsshown in elevation g 5 is a vertical sectional view through a portion of the burner;

Figfe is a side view with part shown in section of the burner structure;

Fig. 7 is a plan view thereof with the main burner removed;

S is a section through the retort tube and the regenerating trough;

'ing'the oil to the burner above.

Serial No. 51e,700.

Fig. 9 is also a sectional view through the retort, trough vand passages;

Fig. l is vlilrewise a sectional view through Vthe retort and passages;

ings, 1 designates a base for the stove made trom sheet'metal or other suitable material and being in the nature of a container or holder for the liquid oil or other`fuel, there being a hand pump 2te put the fuel container under the requisite pressure for rais- The top portion of the container at one "side is depressed to form a trough or hopper 3 leading to a. central filling neck 4 into which the oil or otherliquid fuel isy poured, a cap 5 norvmally Closing the fuel inlet ind being se` cured to the neck as by screw threading.

Si tube 6 lies'within the holder 1 at one 'side thereof and is vdisposed preferably vertically or substantially so with its lower induction' end rdisposed close to the bottom of the holder. The tube 6 passes up through a neel; 7 formed in the top of theholder into which is screw threaded or otherwise eonnected valve easing 8 connected'to, and in 'communication with, said [tube 6. 'Vithin the valvepcasing'S 1s a needle valve 9 being Icontrollable by a hand wheel 10 on the exterior.

The needle valve functions to control the amount of fuel raisedfthrough the tube (Sand delivered to a suitably eurvedpipe 11 connecting with the valve casing 8 and with a hollow boss 12 ofthe ygenerator tube 13 which extends "approximately dianietrically Vacrossthe .cylindricalshell or casing 14 of the stove,`this casing being disposed above the holder l1 and being'supported in'spaced 'relation abovethe top portion thereof as by 'feet 1'5 providing between such feetspaces for the vintroduction of air to the burner from beneath.

The main burner lstructure is indicated at 1G andcoinp'rises a number of arms ra diating Afrom a central Yportion which is in communication `with the yifuel supply. The burner lbissupported bysuitable braces 17 or otherwise. The `ar"'nis'oi.tlie burner '16 are provided with :numerous perforations v18 toadinit'ofthe issuance of aznumberof tine jets of the vaporized fuel suitably `admixed with air to the end that intimate and active combustion of the fuel may occur.r

As more particularly illustrated in Fig 3, the main central portion of the burner 16 is in communication from below wlth a f central fuel conduit 19 comprising two legs disposed on opposite sides of an arch 2O` which straddles the generating tube 13. The

two legs of the fuel conduit'are in communication at their lower portions with ports 21 and 22 made diagonally in convergent walls 23 and 24 of a triangular base structure having a base plate 25 for supporting vertical. walls 26 and 27 dividing a central flue 28 from a pair of lateral flues 29 and 307 there being openings 31 and32 to put the central flue in communication with the two lateral flues. v

A depressed central trough 33 is disposed centrally above the base plate 25 `between the vertical walls 26and 27 and is suitably supported by such walls, there being slots 34 and 35 made in the side portions of the troughto admit of the escape therethrough of the vaporized and prepared fuel, the fuel being ignited7 and the slots comprising burner openings disposed beneath the generator tube 13 for directing the flame beneath the same whereby to preheat and to vaporize the fuel on itsl way from the fuel holder 1.

The prepared fuel is received. into the central flue 2S from the lateral flues 29 and 30 which communicate with curved branchpipes 36 land 37 which both communicate with a common trunk 38 having its receiving end in communication with the mixing chamber 39. This mixing chamber has its lower end open to receive air in suitable quantities and is provided with a pivted cover plate 40 at its top portion to admit of access for cleaning or for supplying additional quantities of air. `The mixing chamber 39 is formed in a head 41 which together with an opposing head 42 provides a support for the generator tube 13.

A tip 43 is provided on the inner end of the generator tube 13 having a minute recess through which the vaporized fuel is caused to issue under pressure in such wise that a partial vacuum is created in the mixing cha n'iber 39 causing the suction of atmospheric air there into for the purpose of mixing the fue] and forming a combustible product.

The end of the generator tube 13 extei'ids beyond a side wall of the stove casing 14 and is provided with a screw plug 45 for purposes of cleaning the tube andto admit of the core 46 which is removably mounted axially within the tube and is provided with projections 47 extending in a variety of directions and being spaced apart and forming suitable abutments for the spiral winding of a wick 48 of asbestos or other Suitable absorbent material; end. projections 4T forming suitable means with which to engage thelooped ends of the wiclrwhereby the same is preventing from uneurling itself about the core or straightening longitudinally.

The wiel; is preferably of such dimensions relative to the core and tube as to form there- 1n a spiral wall progressing from one to thev other end of thetube approximately and constraining the fuel to pass in a spiral pat-h through such tube and insure its being brought successively a number of times to the base portion of the tube which is heated to a high temperatureby reason of the direct impingement thereagainst of the llame from the burner slots 34 and 35. The inner end of the core 46 is enlarged and provided with slots 49 for the passage of thefuel.

` As shown in Fig. 5, a valve 50 of the needle or other type may if desired be provided at the junction of the fuel pipe 11 with the generator tube to further control the amount of fuel directlyfentering the tube' although this is not essential and may be dispensed with in certain instances.

The stove is further provided with an er;- tension shell or casing 51 lying axially above the first mentioned casing 14 and being flanged and shouldered as indicated at 52 edge of the first named shell. The parts are preferably hinged together as indicated at 53 in F ig. 2 to 'permit of the opening ofA the top as there shown. W'ithin the top shell 51 are provided a number of. refractory plates 54, 55 and 56 having inverted frustro-conical perforations 57 therein of varying sizes, the perforations in the lower plate 54 being smaller than those in the next higher plate 55, yet those perforations of the intermediate plate 55 being ysmaller than the perforations of the top plate. This construction admits of the gradual eXpansion of the heated product so that the distribution of these products into the surrounding Aatmosphere is unattended bythe objectionable currents and the strong draft induced where theheated air is directly liberated.

The expansion from one plate to another yoccurs in chambers 58 and provided by lddu 13a-fi tor the passage olA heated product therethrough.

The top o1' the casing 5l is perforated as indicated at (33 to admit ot the expanded heat products issuing upwardly therethrough. rllhe stoveas a unit may be transported and carried about by the use of a bail or handle Get.

As indicated inFig. 3. anumber ot rows of perforations may beprovided in the upper shell 51 in registry with the cut-out portions 62 ot the plate edges to permit of a lateral or horizontalprojection of heated air into the room which the stove occupies.

ln use. a suitable quantity ot' luel being placed in the holder l. and the pump 2 having been previously used to supply a suitable pressure in the holder. the valves 10 and 50 may be opened to a desirable extent to allow a requisite amount otl the fuel to be raised by the pressure throughthe tube 6 and pipe l1 into the receiving end of the generator' tube 13. A. supply oit 1irerosene or like fuel may be initially `poured inthe trough and ignited with a match 4for `the purpose ot starting the device. This heat will lap about the generator tube and cause the vaporization of the fuel passing' spirally about 'the wick and such vaporized fuel after escaping about the cone i9 will issue under pressure through the orilice ll and into the mixing chamber 39 where it will take up a quantity` ot air.

rlhe mixture thus formed will be carried through the trunk 38 and distributed to the branch pipes 3G, 37 and SHA. being thence carried to the lateral tlues 29 and 30 ot' the base structure. These flues will permit a. certain quantity to enter the central flue 28 and to issue through the burner slots 34 and where the fuel will become ignited and act in conjunction with the generator tube to supply heat for the continuous vaporization ot fuel passing to the burner.

ln this case. the generator tube 13 becomes a retort which over lies the supplementary burners 34 and 35. It is understood that the main portion ot the fuel goes from the lateral itlues up through the legs of the burner flue 19 to the main burner 16 and escaping out through the peritorations 18 in the arms. oi the latter is caused to ascend beneath the lowermost refractory plate 5st. The plates are thereby highly heated. and their refractory nature permits them to absorb high quantities of heat which they will retain long after the burner has been eX- t ingu ished.

The fuel in the stove may be therefore kept active only tor a suflicient period to thoroughly heat the plates, whereupon it may be discontinued without impairing the heat which will be for a long time subsequently given ot'f by the radiating of the residual heat in the refractory plates. lf it desired to use the stove or the heating; ot soldering irons or other tools. the top casing 531 may be swung down into the position shown in Fig. 2 which will expose the main burner 16, and suitable tool holders may be placed directly thereon or a grating may be supported by the burnerv and cooking utensils placed thereon.

The stove will find many uses both in heating and in cooking.

When the casing 51 is closed it is held in place during transportation by Vthe use ot a catch 66.

The trough 3% in'eierably contains a quantity of asbestos 233/, as shown in 8 and 9' to absorb the liquid fuel poured thereon and to maintain the hea-t tor asu'llicient time to insure starting oit the device. The barrel or tube 13 as shown in Fig. 8 is provided with a screw connection 13 square or angular on its outer faces to lit in a eorrespondingh7 `formed opening 16. in the standard 17 which supports one end ot the tube. A set screw 18 holds the ccnnection 13 securely in place. T his construction avoids rotation of the tube 13 when the core 1G is rotated therein for the p'rroose ot' cleaning. The teeth or projections 47 on the core. upon rotation, will cut into the carbon within the tube and scrape accumulations troni the walls ot the same, The enlzuged head 4:9 will draw the carbon out ot the tube when the core is removed.

lt is obvious that various changes and modifications may be made in the details ot' construction and design of the above specifically described embodiment of this invention without departing from the Spirit thereof. such changes and modifications being restricted only by the scope ol the tollowing claims:

lVhat is claimed is:

1. An improved stove comprising a casing. a burner therein, a `generator tube placed to be lapped by the heat of the burner. a core in the tube having projections, and a wick wound spirally about the core and having looped ends engaging` certain projections. substantially as described.

2. A portable oil stove comprising` a base having` reservoir tor the fuel, means to put the reservoir under i:u'essure` a casino' supported at an elevation above the base. a burner therein, a. ret-ort above the burner in controlled communication with the reserxv'oir,

a mixing chamber to receive the tuel from the retort said burner having lateral tlues to receive the prepared fuel from the chamber and a central flue in communication with the lateral lines, said central liue leading` to the burner, an upper casing hinged to the vfirst-mentioned casing and having openings in its sides and top. and refractory plates above the burner in the upper casing having perforations therein and spaces therebetween said plates having cut-out portions at the margins in registry with the perfox'ations in the sides of the upper casing, substantially as described.

3. A stove comprising a burner, a source of liquid fuel, a retort heated by the burner and in communication with the fuel source, said retort being long and narrow, detachabler caps fitting the ends of the retort, one cap having a spray opening, and a chamber receiving the spray cap and connecting with the interior of the burner, a core removably fitted through the other end of the retort and being detachable with the opposite cap, said core having a slotted head adjacent the spray cap to form a bearing for the core. in the retort, said core also having rows of circumferentially and axially spaced projections, and a wick wound spirally about the core and the projections thereon and extending substantially to the retort inner wall to form a spiral passage from end to end of the retort, said wick having its ends engaged with end projections to avoid unraveling thereof, substantially as described.

4. A stove comprising a vbase having a reservoir for the fuel, means to put the reservoir under pressure, a casing supported at an elevation above the base and having air intake openings in its bottom, a main burner in the casing, a supplementary burner below the main burner, an elongated retort just above ,the supplementary burner having a tortuous passage therein in controlled communication with the fuel reservoir, a mixing chamber to receive the vaporized fuel from the retort and having communication with the outside atmosphere, a pair of lateral fiues beneath the supplementary burner in connection both with the mixing chamber and main burner, and a centralflue communicating with the lateral flues and with the supplementary burner, substantially as described.

5. A portable oil stove comprising la base having a reservoir for fuel, means to put the reservoir under pressure, a casing supported at an elevation above the base and having communication at its bottom portion with the outside atmosphere, main and supplementary burners in the casing, a retort heated by the supplementary burnery and ALEXANDER MioLAUsH 

